Finding out when a command in a pipeline fails
Suppose you are in the situation from last entry andwant to know whether may-fail actually failed, and you don't want tojust split the pipeline up and use a temporary file.
In Bash, a commentator on the last entry pointed out that this issimple: you can use the $PIPESTATUS array variable to see the outputstatus of any command in the pipeline. The same feature is available inzsh, but it uses $pipestatus (lower case), just to be different.
If you want
陳巧文： 北極有企鵝，香港有民主
呼籲各位親愛的讀者以行動支持Christina。
示威橫額、工具都要製作費。
陳巧文籌款原因：
上年奧運火炬和平示威者被警察襲擊及強行帶走
一拖拖到而家嘅司法覆轍而要俾嘅 $1000 ，
到今日一直都籌唔到 $1，
因為太懶又太唔好意
示威橫額、工具都要製作費。
陳巧文籌款原因：
上年奧運火炬和平示威者被警察襲擊及強行帶走
一拖拖到而家嘅司法覆轍而要俾嘅 $1000 ，
到今日一直都籌唔到 $1，
因為太懶又太唔好意
化妝教學 YouTube排行十大
《蘋果日報》
YouTube幾乎每天也瀏覽一次，越來越多愛 美女生，不惜素顏在鏡頭面前，化妝由無到有來個大變身，且當中瀏覽率亦高，部份更高達數百萬點擊率。香港本地薑也不甘示弱，跟外國女生的化妝教學比較，那 一個點擊率最
熱血教師不寂寞
在澳門當老師是很辛苦的工作。課時太多，每班人數太多，與教學無關的活動太多，賭城中的學生遇到的問題與別不同又層出不窮，只要你是一個認真的教師，你一定會疲於奔命。
當然，講課內容和教學方法“十年如一日”，批
當然，講課內容和教學方法“十年如一日”，批
Web Site Story
來自 ColleageHumor ，網絡加西城故事，唱得也很不錯！
在這電影中，我看到心魔
《聖訴》（Doubt）看起來是悶戲，但想不到劇本可以這樣好，戲中人的對白句句精彩，劇力逼人，實在震撼。
故事發生在一間天主教學校，作風新派開明的神父對學校首名黑人男生特別好。兼任校長的守舊修女懷疑神父別有用心侵
故事發生在一間天主教學校，作風新派開明的神父對學校首名黑人男生特別好。兼任校長的守舊修女懷疑神父別有用心侵
More on why users keep mailing specific people
Perhaps unsurprisingly, most of the people who've commented on my lastentry have attributed this behavior to people'sdesire to get their issues dealt with promptly (to some, this is jumpingthe queue; what you could call a 'vigorous discussion' has broken outin the comments about this, rather to my surprise). I have a couple ofreactions to this view.
First, I am pretty sure that this is not why people here do it, at leastfor the kind of cases that I
A Unix irritation: pipeline status
Let's start with a Bourne shell irritation. Suppose you have a commandsequence that looks like:
may-fail | grep ...
Further suppose that you want to know whether may-fail actuallyfailed. In the normal Bourne shell, you're out of luck; the exit statusof a pipeline is the exit status of the last command, and grep willprobably succeed no matter what happens to may-fail . You're goingto need to use a temporary file instead of the pipeline or